ebrary, Inc, & Hardy, I. (2002). Sex ratios: Concepts and research methods. Cambridge University Press.
Chicagoスタイル(17版)引用形式ebrary, Inc, , Ian Hardy. Sex Ratios: Concepts and Research Methods. Cambridge: Cambridge University Press, 2002.
MLA(9版)引用形式ebrary, Inc, , Ian Hardy. Sex Ratios: Concepts and Research Methods. Cambridge University Press, 2002.
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